+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <cpu_func.h>
#include <asm/cacheops.h>
#ifdef CONFIG_MIPS_L2_CACHE
#include <asm/cm.h>
#ifdef CONFIG_MIPS_L2_CACHE
return gd->arch.l2_line_size;
#else
- return 0;
+ return CONFIG_SYS_SCACHE_LINE_SIZE;
#endif
}
const unsigned int cache_ops[] = { ops }; \
unsigned int i; \
\
+ if (!lsize) \
+ break; \
+ \
for (; addr <= aend; addr += lsize) { \
for (i = 0; i < ARRAY_SIZE(cache_ops); i++) \
mips_cache(cache_ops[i], addr); \
cache_loop(start_addr, start_addr + size, dlsize, HIT_WRITEBACK_INV_D);
/* flush L2 cache */
- if (slsize)
- cache_loop(start_addr, start_addr + size, slsize,
- HIT_WRITEBACK_INV_SD);
+ cache_loop(start_addr, start_addr + size, slsize, HIT_WRITEBACK_INV_SD);
/* flush I-cache */
cache_loop(start_addr, start_addr + size, ilsize, HIT_INVALIDATE_I);
instruction_hazard_barrier();
}
-void flush_dcache_range(ulong start_addr, ulong stop)
+void __weak flush_dcache_range(ulong start_addr, ulong stop)
{
unsigned long lsize = dcache_line_size();
unsigned long slsize = scache_line_size();
cache_loop(start_addr, stop, lsize, HIT_WRITEBACK_INV_D);
/* flush L2 cache */
- if (slsize)
- cache_loop(start_addr, stop, slsize, HIT_WRITEBACK_INV_SD);
+ cache_loop(start_addr, stop, slsize, HIT_WRITEBACK_INV_SD);
/* ensure cache ops complete before any further memory accesses */
sync();
return;
/* invalidate L2 cache */
- if (slsize)
- cache_loop(start_addr, stop, slsize, HIT_INVALIDATE_SD);
+ cache_loop(start_addr, stop, slsize, HIT_INVALIDATE_SD);
cache_loop(start_addr, stop, lsize, HIT_INVALIDATE_D);
/* ensure cache ops complete before any further memory accesses */
sync();
}
+
+int dcache_status(void)
+{
+ unsigned int cca = read_c0_config() & CONF_CM_CMASK;
+ return cca != CONF_CM_UNCACHED;
+}
+
+void dcache_enable(void)
+{
+ puts("Not supported!\n");
+}
+
+void dcache_disable(void)
+{
+ /* change CCA to uncached */
+ change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
+
+ /* ensure the pipeline doesn't contain now-invalid instructions */
+ instruction_hazard_barrier();
+}